class_docstr: This plan is used for storing information required for sequential scan
  operations.
  
  Arguments:
      columns: List[AbstractExpression]
          list of column names string in the plan
      predicate: AbstractExpression
          An expression used for filtering
code: def __str__(self):
      return "SeqScanPlan(predicate={}, \
              columns={}, \
              alias={})".format(
          self._predicate, self._columns, self.alias
      )
  
file_path: evadb/evadb/plan_nodes/seq_scan_plan.py
imports: from typing import List
  from evadb.expression.abstract_expression import AbstractExpression
  from evadb.plan_nodes.abstract_scan_plan import AbstractScan
  from evadb.plan_nodes.types import PlanOprType
label_desc: Use image node_id 3 for calling the SeqScanPlan obj's underlying member method code with example usage: obj.__str__() and returns: str